e1000: allow VLAN devices to use TSO and CSUM offload

This patch changes e1000 to set vlan_features so TSO and CSUM
offload can be used by VLAN devices, similar as with the other
Intel drivers.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/e1000/e1000_main.c

@@ -1047,6 +1047,11 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
 
 	netdev->features |= NETIF_F_LLTX;
 
+	netdev->vlan_features |= NETIF_F_TSO;
+	netdev->vlan_features |= NETIF_F_TSO6;
+	netdev->vlan_features |= NETIF_F_HW_CSUM;
+	netdev->vlan_features |= NETIF_F_SG;
+
 	adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
 
 	/* initialize eeprom parameters */